Finding the Fourth Proportional to 385,337,433.75, 531,765,936 and 209,125,383.54
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Solution
The fourth proportional to 385,337,433.75, 531,765,936 and 209,125,383.54 is: 288,593,179.85
Step by Step Solution
- Step 1: Write the proportion equation
385,337,433.75 : 531,765,936 = 209,125,383.54 : x - Step 2: Convert to fraction form
385,337,433.75/531,765,936 = 209,125,383.54/x - Step 3: Cross multiply
385,337,433.75x = 531,765,936 × 209,125,383.54 - Step 4: Simplify right side
385,337,433.75x = 111,205,755,319,507,088 - Step 5: Solve for x
x = 111,205,755,319,507,088/385,337,433.75 - Step 6: Final answer
x = 288,593,179.85
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.